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arXiv quant-ph/0702057quant-ph
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可伸缩量子网络中纠缠分布的函数量子节点

Functional Quantum Nodes for Entanglement Distribution over Scalable Quantum Networks

Chin-Wen Chou, Julien Laurat, Hui Deng, Kyung Soo Choi, Hugues de Riedmatten, Daniel Felinto, H. Jeff Kimble

摘要:

我们演示了两个相距3米的远程量子节点之间的纠缠分布。这种分布涉及两对原子存储器的异步准备和存储的原子状态到光场的相干映射在一个有效的状态附近的最大偏振纠缠。纠缠通过测量违反贝尔不等式的方式来验证,并且可以用于诸如量子密码学的通信协议。演示的量子节点和通道可以用作量子中继器的部分,为强大的长距离量子通信提供了必要的工具。

英文摘要:

We demonstrate entanglement distribution between two remote quantum nodes located 3 meters apart. This distribution involves the asynchronous preparation of two pairs of atomic memories and the coherent mapping of stored atomic states into light fields in an effective state of near maximum polarization entanglement. Entanglement is verified by way of the measured violation of a Bell inequality, and can be used for communication protocols such as quantum cryptography. The demonstrated quantum nodes and channels can be used as segments of a quantum repeater, providing an essential tool for robust long-distance quantum communication.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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